For anyone else having trackir issues:
There are two 'issues' being experienced by users
1) They sometimes need to update their DX9 and GPU drivers to run the DX9 advanced shaders.
Note: as a fallback you can select DEFAULT SHADERS in workshops
2) They sometimes need to do a game update for their Trackir.Both are easy but out of our hands and up to the end users - however we are assisting as we can.
I suggest you read this thread for assistance:
http://simhq.com/forum/ubbthreads.php/topics/4041135/WOFF_EXPANSION_TROUBLESHOOTING#Post4041135Note: After unpacking the DirectX Update make sure you go and RUN the SETUP.exe - unpacking it does NOT INSTALL it
I will post this wherever I can to assist
HTH
WM